JSON parse error: No suitable constructor found for type

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JSON parse error: No suitable constructor found for type

错误信息: 2019-02-19 09:17:58,678 [http-nio-8080-exec-1] WARN org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error:…

【开发遇到的问题】Spring Mvc使用Jackson进行json转对象时，遇到的字符串转日期的异常处理（JSON parse error: Can not deserialize value of type java.util.Date from String[）

1.问题排查 - 项目配置 springboot 2.1 maven配置jackson - 出现的场景: 服务端通过springmvc写了一个对外的接口,查询数据中的表,表中有一个字段属性是时间戳,返回一个json字符串,其中该json带有日期,格式为yyyy-MM-dd HH:mm:ss 客户端调用该http接口,指定返回值为一个Vo,Vo中日期的字段为Date类型客户端调用该接口后抛异常了.报错信息如下: feign.codec.DecodeException: JSON parse er…

JSON parse error: Cannot deserialize value of type `java.time.LocalDateTime` from String

在使用Postman测试Spring Boot项目接口时,接口返回JSON parse error: Cannot deserialize value of type `java.time.LocalDateTime` from String错误,如下图: 参数使用JSON格式,POST请求,如下图: createTime变量使用了字符串类型,接口接收参数后将该字符串转为日期时,发生错误,项目中使用fastjson来处理json数据. 此问题解决方法在接收参数实体类的createtime字段添…

JSON parse error: default constructor not found. class java.time.YearMonth; nested exception is com.alibaba.fastjson.JSONException: default constructor not found. class java.time.YearMonth

java8新出的YearMonth可以方便的用来表示某个月.我的项目中使用springmvc来接收YearMonth类型的数据时发现 x-www-from-urlencoded 格式的数据可以使用"2018-12"的类型接收,但是在post请求中接收application/json的数据时出现以下错误 2020-02-18 11:18:25.284 WARN 16212 --- [nio-8090-exec-2] .w.s.m.s.DefaultHandlerExceptionRes…

JSON parse error: Cannot deserialize instance of `int` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc

代码程序: @PostMapping("selectById") @ResponseBody public Result selectById(@RequestBody int id) { Result result =new Result(); List<User> list = userService.selectById(id); if(list.size()==1){ result.setCode("000"); result.setMsg(&q…

JSON parse error: Can not deserialize instance of java.lang.String out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of j

异常信息如下: JSON parse error: Can not deserialize instance of java.lang.String out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT token…

java开发客户端发送请求到服务器端出现这样：JSON parse error: Unexpected character ('}' (code 125)): was expecting

org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unexpected character ('}' (code 125)): was expecting double-quote to start field name; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected…